[文法] 2個短句求助

[embedded (煙雨濛濛)]

原句1 :

We can execute following instructions which do not share this

dependency, provided that logical hazards between instructions are

rigorously respected.


問1 : "which do not share this dependency" 是子句,
      用來描述which前面的instruction這個名詞.
      但後面的provided that logical....就看不懂了.


原句2 :

This can improve performance if the pipeline has

become unblocked having previously been stalled for some reason.

問2 : having之前的句子都懂, 很簡單的直述句, having previous...這邊開始看不懂.


感謝大家的幫忙, 謝謝


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